Pretty amazing thread.

Thank you for your info RWW.

Given the significance of this find, I have decided to take a bulletproof approach: The artifact is now being sent for detailed analysis to internationally recognized specialists in forensic textile expertise and early Cold War technology. This analysis will include microscopic examination of the fibers and comparison with the Aero Medical Laboratory project protocols to which these experts have access. In any case, thank you for your expert opinion and it will be my honor to inform you of the result. With respect and best regards, Radim Kurc Pelikán

At this point, it's a professional execution for you, where you want to catch me in the details, unfortunately I know everything about it and once you receive an expert opinion there is nothing to discuss, instead of valuing something that is national history for you, it's already desperation on your part...

If it's a women's shirt, why does it have a men's closure and why does it have an inside pocket for a sensor right above a man's heart and not a women's size? And since when were women's shirts modified in the 1950s with satin in the collar for centrifuge tests?  

This appears to be a woman’s cut shirt, with the waist in it and quarter-panel creases.

And here is your final nail of your professionalism...

Before you embarrass yourself in front of all the experts, I'm sending you the last photo and if you can please get me a similar shirt for your 25 USD, I'll take it from the dozen you have in your shoe closet...

It was just a single piece of paper with the sketch on it and the signatures, unfortunately no other information. According to my file it was back in 2015. If the signatures can be correctly read then maybe it would be possible to find out more. I took a close up scan at the time of the signatures. Quick search on the internet not helped by the fact that the snow tracked version of the Jeep was known as a Penguin Jeep apparently. 

But the SSI is on the combat side... I am unsure if it was maybe different with the US Navy, but wouldn't the active SSI have to be worn on the left shoulder?